A line search filter inexact SQP method for nonlinear equality constrained optimization

This paper proposes an inexact SQP method in association with line search filter technique for solving nonlinear equality constrained optimization.For large-scale applications,it is expensive to get an exact search direction,and hence the authors use an inexact method that finds an approximate solution satisfying some appropriate conditions.The global convergence of the proposed algorithm is established by using line search filter technique.The second-order correction step is used to overcome the Maratos effect,while the line search filter inexact SQP method has q-superlinear local convergence rate.Finally,the results of numerical experiments indicate that the proposed method is efficient for the given test problems.     

\"公司+农户\"模式生猪供应链中农户最优饲养规模研究

价格大幅波动以及猪肉安全是困扰我国生猪产业的两大问题, 要从根源上解决, 必须提高农户饲养规模, 并建立农户和公司之间的直接稳定关系. 研究在\"公司\"和\"农户\"直接联系的生猪供应链中, 农户规模需要多大才能使得供应链契约稳定, 并进而保障猪肉安全呢?认为公司和农户相互之间进行专用性资产投资, 按照饲养规模和合作周期的关系, 把公司和农户的交易成本(含专用性资产投资)分为四类, 并构建了各自的成本收益函数, 对函数定性分析认为: 无论是对于农户而言还是对于企业而言, 对单个农户的饲养规模都具有一定的要求, 单个农户的饲养规模太小则长期契约无法保障, 品质也没有保障. 在此基础上定量求解二次型规划, 并进行数值模拟, 得出结论: 单个农户的饲养规模越大, 则公司与农户的合作年限(即契约长短)越长, 农户的饲养品质越高, 猪肉安全越有保障; 其原因是单个农户的规模越大, 相互投入的专用性资产越高, 越愿意建立并维护长期契约关系. 且农户投入的专用性资产(包括规模专用性资产和品质专用性资产)等于企业为该农户投入的专用性资产与农户饲养边际变动成本之和的1/2.     

层次分析法中逆序问题与其决策环境的研究

本文研究了层次分析法中的逆序问题与其决策环境的关系,并对产生逆序现象的机理做了数学上的分析和定性的解释。文中还给出了多准则下排序的强保序定理。     

Decision with Grey Correlation and AHP

ＤｅｃｉｓｉｏｎｗｉｔｈＧｒｅｙＣｏｒｒｅｌａｔｉｏｎａｎｄＡＨＰＺＨＡＪｉｎｇｍｉｎａｎｄＺＨＯＮＧＤｏｎｇｈｕａ（Ｄｅｐｔ．ｏｆＨｙｄｒａｕｌｉｃｉｃＥｎｇｉｎ．，ＴｉａｎｊｉｎＵｎｉｖｅｒｓｉｔｙ，Ｔｉａｎｊｉｎ３０００７２，Ｃｈｉｎａ）Ａｂｓ...     

TV跟踪系统光电轴一致性研究

本文论述复合制导系统 ＴＶ光电设备光电轴一致性问题，并给出新的处理方法。研究结果表明：本方法具有较高的精度与应用价值。     

多处理器自适应干扰抑制系统

本文描述了一个采用多处理器的自适应干扰抑制系统，讨论了系统的拓扑结构、组成框图及测试环境、自适应处理算法，给出了用于雷达数字波束形成系统自适应干扰抑制的实验结果。     

人机系统中人的失误机理辩识的可靠性分析方法

本文基于人机系统中人行为形成因子内涵的界定和人的差错元概念的定义,从系统的角度出发,对人的失误机理进行了辩识,依此揭示出人失误的原因与三类认知行为单元的关系,并且分析了人在差错状态下的不同恢复过程及其结构方式;最后,文中对现有的几种典型的人可靠性分析方法进行了评述,指出人机系统中人的失误机理辩识的可靠性分析方法研究的发展方向.     

计算多芯电缆内导线间高频电磁干扰电压的混合法

本文基于传输线理论和矩量法，提出一种计算多芯电缆内导线间高频电磁干扰电压的混合法，并给出了该方法所用的详细理论计算公式。理论值与实测值吻合一致，表明该方法是一种可在工程设计中应用的有效算法。     

关于导弹定价的时序模糊综合评判

本文利用模糊集分析的方法，量化了影响导弹价值的因素，建立了关于导弹定价的时序模糊综合评判模型。并且对改装后的导弹定价和分批交付的导弹综合定价进行了定量计算并分析了结果。     

Topic-Feature Lattices Construction and Visualization for Dynamic Topic Number

The topic recognition for dynamic topic number can realize the dynamic update of super parameters, and obtain the probability distribution of dynamic topics in time dimension, which helps to clear the understanding and tracking of convection text data. However, the current topic recognition model tends to be based on a fixed number of topics K and lacks multi-granularity analysis of subject knowledge. Therefore, it is impossible to deeply perceive the dynamic change of the topic in the time series. By introducing a novel approach on the basis of Infinite Latent Dirichlet allocation model, a topic feature lattice under the dynamic topic number is constructed. In the model, documents, topics and vocabularies are jointly modeled to generate two probability distribution matrices: Documentstopics and topic-feature words. Afterwards, the association intensity is computed between the topic and its feature vocabulary to establish the topic formal context matrix. Finally, the topic feature is induced according to the formal concept analysis(FCA) theory. The topic feature lattice under dynamic topic number(TFL DTN) model is validated on the real dataset by comparing with the mainstream methods. Experiments show that this model is more in line with actual needs, and achieves better results in semi-automatic modeling of topic visualization analysis.